CN-121984114-A - New energy station distributed camera adjustment damping evaluation method and device

CN121984114ACN 121984114 ACN121984114 ACN 121984114ACN-121984114-A

Abstract

The invention provides a new energy station distributed type camera adjustment damping evaluation method and device, the method comprises the steps of obtaining parameters to be analyzed, initial condition parameter data, camera adjustment and system related parameter data, obtaining a relation between the parameters to be analyzed and a camera adjustment damping level according to a camera adjustment damping level relation formula and a coefficient expression of a distributed type camera adjustment sea Buddha capacity-flight Li Pusi model which aims at new energy output, wherein the distributed type camera adjustment sea Buddha capacity-flight Li Pusi model which aims at new energy output is established in advance, and carrying out camera adjustment damping evaluation according to a numerical variation range of the parameters to be analyzed, the initial condition parameter data, camera adjustment and system related parameter data and the relation between the parameters to be analyzed and the camera adjustment damping level. The device is used for executing the method. The method and the device for evaluating the damping of the distributed camera of the new energy station improve the reliability of evaluating the damping level of the camera.

Inventors

QIN CHUAN
LIANG HAO
XIE HUAN
LIU YINGLIN
ZHANG GUANGTAO
LIANG BEIHUA
LU WENQING
LI CHANGYU
CAO TIANZHI

Assignees

国网冀北电力有限公司电力科学研究院
国家电网有限公司

Dates

Publication Date: 20260505
Application Date: 20251229

Claims (10)

1. A damping evaluation method for a distributed camera of a new energy station is characterized by comprising the following steps: Acquiring parameters to be analyzed, initial condition parameter data, a camera and system related parameter data; obtaining a relation between the parameter to be analyzed and the damping level of the camera according to a camera damping level relation formula, a coefficient expression of a distributed camera sea Buddha capacity-flight Li Pusi model for taking new energy output into account, wherein the distributed camera sea Buddha capacity-flight Li Pusi model for taking new energy output into account is pre-established; And performing damping evaluation of the camera according to the numerical variation range of the parameter to be analyzed, the initial condition parameter data, the camera and system related parameter data and the relation between the parameter to be analyzed and the damping level of the camera.
2. The method of claim 1, wherein the coefficient expression of the distributed tuning sea-seveto-flight Li Pusi model that accounts for new energy output comprises: Wherein, the 、、、、 And To account for the coefficients of the new energy derived distributed camera sea sevet-femt Li Pusi model, Representing the sum of the reactance of the main transformer and the outgoing line of the new energy station, Represents the active current of the fan, Representing the voltage at an infinite system, Represents the initial value of the power angle of the camera, Representing camera q-axis transients an initial value of the electromotive force, Represents the initial value of d-axis current of the shunt of the phase regulator, Representing the q-axis synchronous reactance of the tuner, Represents the d-axis transient reactance of the tuner, Indicating the boost varactors of the dimmer, Representing the initial value of the q-axis current of the shunt of the dimmer.
3. The method of claim 2, wherein the camera damping level relationship formula is: Wherein, the Representing the level of damping of the camera, 、、 And To account for the coefficients of the new energy derived distributed camera sea sevet-femt Li Pusi model, Representing the transient open circuit time constant of the dimmer, Indicating the gain of the excitation system, Indicating the camera angular velocity.
4. The method of claim 3, wherein the camera damping level relationship formula is established based on a relationship between electromagnetic power generated by a flux linkage change of the camera and a camera power angle change amount based on the camera damping level relationship formula.
5. The method of claim 1, wherein the distributed camera sea-futous-Li Pusi model that accounts for new energy output is constructed based on new energy station send-out system model of the camera, system power flow, new energy power supply, and electrical characteristics of the distributed camera.
6. The method according to any one of claims 1 to 5, wherein the parameter to be analyzed is fan active current, system impedance or excitation system gain.
7. The utility model provides a new energy station distributing type camera damping evaluation device which characterized in that includes: The acquisition module is used for acquiring parameters to be analyzed, initial condition parameter data, a camera and system related parameter data; the acquisition module is used for acquiring a relation between the parameter to be analyzed and the damping level of the camera according to a camera damping level relation formula, a coefficient expression of a distributed camera sea Buddha capacity-flight Li Pusi model for taking new energy output into account, wherein the distributed camera sea Buddha capacity-flight Li Pusi model for taking new energy output into account is pre-established; and the analysis module is used for carrying out damping level evaluation of the camera according to the numerical variation range of the parameter to be analyzed, the initial condition parameter data, the parameter data related to the camera and the system and the relational expression of the parameter to be analyzed and the damping level of the camera.
8. A computer device comprising a memory, a processor and a computer program stored on the memory, characterized in that the processor executes the computer program to implement the method of any one of claims 1 to 6.
9. A computer readable storage medium, characterized in that it stores a computer program/instruction which, when executed by a processor, implements the method of any of claims 1 to 6.
10. A computer program product comprising computer programs/instructions which, when executed by a processor, implement the method of any of claims 1 to 6.

Description

New energy station distributed camera adjustment damping evaluation method and device Technical Field The invention relates to the technical field of new energy, in particular to a damping evaluation method and device for a distributed camera of a new energy station. Background Deployment of distributed cameras in new energy stations is an effective measure for improving the short-circuit ratio of the new energy multi-station, and more new energy stations are considered to improve the voltage supporting capability of the new energy stations on a power grid in a mode of deployment of the distributed cameras. The new energy station is mostly located in a remote area far away from the load center, a long-distance transmission line is usually required to be connected into a power grid, the installed capacity and the power generation duty ratio of the new energy are continuously improved along with the fact that the generated power of the new energy has larger fluctuation, and the low-frequency oscillation risk of the power system is continuously increased. In the actual large power grid electromechanical and electromagnetic transient simulation, the conditions of negative damping low-frequency oscillation of a camera and a sending-out system are caused when the new energy power generation time rate is high. Therefore, research on damping characteristics of a camera for taking into consideration the output level of new energy is needed. Disclosure of Invention Aiming at the problems in the prior art, the embodiment of the invention provides a damping evaluation method and device for a distributed camera of a new energy station, which can at least partially solve the problems in the prior art. In a first aspect, the present invention provides a damping evaluation method for a distributed camera of a new energy station, including: Acquiring parameters to be analyzed, initial condition parameter data, a camera and system related parameter data; obtaining a relation between the parameter to be analyzed and the damping level of the camera according to a camera damping level relation formula, a coefficient expression of a distributed camera sea Buddha capacity-flight Li Pusi model for taking new energy output into account, wherein the distributed camera sea Buddha capacity-flight Li Pusi model for taking new energy output into account is pre-established; And performing damping evaluation of the camera according to the numerical variation range of the parameter to be analyzed, the initial condition parameter data, the camera and system related parameter data and the relation between the parameter to be analyzed and the damping level of the camera. In a second aspect, the present invention provides a new energy station distributed camera damping assessment device, including: The acquisition module is used for acquiring parameters to be analyzed, initial condition parameter data, a camera and system related parameter data; the acquisition module is used for acquiring a relation between the parameter to be analyzed and the damping level of the camera according to a camera damping level relation formula, a coefficient expression of a distributed camera sea Buddha capacity-flight Li Pusi model for taking new energy output into account, wherein the distributed camera sea Buddha capacity-flight Li Pusi model for taking new energy output into account is pre-established; and the analysis module is used for carrying out damping level evaluation of the camera according to the numerical variation range of the parameter to be analyzed, the initial condition parameter data, the parameter data related to the camera and the system and the relational expression of the parameter to be analyzed and the damping level of the camera. In a third aspect, the present invention provides a computer device, including a memory, a processor, and a computer program stored on the memory, where the processor executes the program to implement the method for evaluating damping of a distributed camera of a new energy station according to any one of the foregoing embodiments. In a fourth aspect, the present invention provides a computer readable storage medium storing a computer program/instruction, which when executed by a processor, implements the method for evaluating damping of a distributed camera for a new energy station according to any one of the embodiments above. In a fifth aspect, the present invention provides a computer program product, including a computer program/instruction, which when executed by a processor implements the method for evaluating damping of a distributed camera of a new energy station according to any one of the embodiments described above. The method and the device for evaluating the damping of the distributed camera of the new energy station acquire parameters to be analyzed, initial condition parameter data and relevant parameter data of the camera and a system, acquire the relation between the parameters to be analyzed